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Finding the Fourth Proportional to 55,603.92, 76,733.76 and 30,455.76

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Solution

The fourth proportional to 55,603.92, 76,733.76 and 30,455.76 is: 42,029.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,603.92 : 76,733.76 = 30,455.76 : x
  2. Step 2: Convert to fraction form
    55,603.92/76,733.76 = 30,455.76/x
  3. Step 3: Cross multiply
    55,603.92x = 76,733.76 × 30,455.76
  4. Step 4: Simplify right side
    55,603.92x = 2,336,984,978.46
  5. Step 5: Solve for x
    x = 2,336,984,978.46/55,603.92
  6. Step 6: Final answer
    x = 42,029.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.